So, if Swisher's sources are right, Groupon wants to go public as soon as possible, sooner than previously anticipated. Most people were expecting a Groupon IPO in the fall.

An IPO is a complicated process. There's a fair bit of bureaucracy involved, and that's only the beginning -- after that you have to go with your banker to meet a bunch of institutional investors who have to agree to buy your stock so the IPO doesn't flop. But a filing could happen at any time.

That being said, Groupon is almost sure to be one of the hottest IPOs. It could go public at a $25 billion valuation, which would make it a bigger IPO than Google.